EP3106674B1 - Roue a palettes et procede de fabrication d'une roue a palettes - Google Patents

Roue a palettes et procede de fabrication d'une roue a palettes Download PDF

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Publication number
EP3106674B1
EP3106674B1 EP16172709.4A EP16172709A EP3106674B1 EP 3106674 B1 EP3106674 B1 EP 3106674B1 EP 16172709 A EP16172709 A EP 16172709A EP 3106674 B1 EP3106674 B1 EP 3106674B1
Authority
EP
European Patent Office
Prior art keywords
impeller
carbon fiber
fiber layer
top panel
blade carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16172709.4A
Other languages
German (de)
English (en)
Other versions
EP3106674A1 (fr
Inventor
Dr. Martin HENRICH
Gotthard Nauditt
Tim Fabian Howe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schunk Kohlenstofftechnik GmbH
Original Assignee
Schunk Kohlenstofftechnik GmbH
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Filing date
Publication date
Application filed by Schunk Kohlenstofftechnik GmbH filed Critical Schunk Kohlenstofftechnik GmbH
Publication of EP3106674A1 publication Critical patent/EP3106674A1/fr
Application granted granted Critical
Publication of EP3106674B1 publication Critical patent/EP3106674B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced
    • F05D2300/6034—Orientation of fibres, weaving, ply angle

Definitions

  • the present invention relates to an impeller for a circulating device for circulating a surrounding atmosphere, the impeller having a plurality of blades that extend in the direction of an axis of rotation of the impeller between an airfoil carrier and a preferably ring-shaped head plate and the height of the distance between the head plate Define from the airfoil carrier in the direction of the axis of rotation, the airfoil carrier, the head plate and the airfoils having a laminate structure, each with a plurality of carbon fiber layer blanks arranged one on top of the other, the carbon fiber layer blanks of the laminate structure forming the airfoils having a blank length which is greater than the height of the airfoils, such that the carbon fiber layer blanks in connection areas of the airfoils with the airfoil carrier and the head plate with each because an upper and a lower blank end are arranged between two adjacent carbon fiber layer blanks of the airfoil carrier and the head plate.
  • the invention relates to a method for producing such an impeller.
  • a blade wheel which has a plurality of blade blades which extend in the direction of an axis of rotation of the blade wheel between an airfoil carrier and a head plate. It is also disclosed that the airfoil height defines the distance of the head plate from the airfoil carrier in the direction of the axis of rotation.
  • the airfoil carrier, the head plate and the airfoils have a laminate structure, each with a plurality of carbon fiber layers arranged on top of one another.
  • a circulating device for circulating a surrounding atmosphere which relates to an impeller formed from a plurality of mutually independent components, so that bolt connections are proposed, for example, for connecting the aerofoils to the aerofoil carrier and a head plate, such that at the respective upper and lower ends of the aerofoils trained threaded bolts through through openings of the airfoil carrier and the head plate and are provided at their free axial ends with a nut which, like the bolts, is formed from graphite.
  • the present invention is based on the object of proposing a bucket wheel or a method for producing a bucket wheel which enables an operationally reliable connection between the airfoils and the airfoil carrier and the head plate without this requires special measures regardless of the manufacture of the aforementioned components.
  • the paddle wheel according to the invention has the features of claim 1.
  • the blade wheel according to the invention has a laminate structure for connecting the airfoils to the airfoil carrier and the top disk in the connection areas, in which the upper and lower ends of the carbon fiber layer blanks forming the laminate structure of the airfoil form an interlaminar connection between the airfoil carrier and the top disk.
  • a connection laminate structure is formed with a kind of toothing between the laminate structure of the airfoil and the laminate structure of the airfoil carrier and the top plate.
  • the paddle wheel according to the invention has a connection which is formed synchronously with the formation of the laminate structures of the airfoil carrier and of the top plate, so that no separate operation is necessary to produce the connection.
  • the configuration of a vane wheel in which discontinuities and in particular stiffness jumps between the vane blades and the vane carrier and the head plate are avoided in a special way, is achieved if the laminate structure in the connection areas is designed such that the upper and lower cut ends of the carbon fiber layer blanks of the vane blades alternate are arranged with the carbon fiber layer blanks of the airfoil carrier and the head plate.
  • the impeller according to the invention also has the advantage, by avoiding special connecting elements, that mass accumulations in the connection areas, which can lead to imbalances during operation of the impeller, are avoided. This enables higher rotational speeds without impairing operational reliability.
  • the possible operating temperatures are not restricted by the temperature resistance of the connecting elements or the measures securing the connection between the connecting elements, such as local siliconization.
  • the method according to the invention has the features of claim 3.
  • a laminate structure with a plurality of adjacent carbon fiber layer blanks is built up to form the airfoil carrier, the head disc and the airfoil, and to form connecting regions between the laminate structure of the airfoil and the laminate structures of the airfoil carrier and the head disc, upper and lower blanks of the carbon fiber layer blanks are subsequently cut Implementation is pivoted through push-through openings formed in the carbon fiber layer blanks of the airfoil carrier and the head disc against a carbon fiber layer blank and is coated with a further carbon fiber layer blank of the airfoil carrier and the head disc.
  • a laminate structure with an alternating arrangement of carbon fiber layer blanks of the airfoil carrier and of the top plate with cut ends of the carbon fiber layer blanks of the airfoil blades is preferably formed in the connection regions.
  • the carbon fiber layer blanks of the airfoil joined to the laminate structure of the airfoil are arranged in positioning slots of a molding tool forming a molding ring, such that the upper and lower cutting ends each have a top and bottom surface of the molding tool protrude formed contact surface and the carbon fiber layer blanks of the airfoil carrier and the head disc are deposited on the contact surface to form the laminate structure of the connection areas to the airfoil carrier and the head disc, it is ensured that a predetermined geometry of the impeller can actually be produced.
  • a paddle wheel and a preferred method for producing the paddle wheel are described in more detail below with reference to the drawing.
  • Fig. 1 shows a circulating device 20 with a shaft 21 for connecting the circulating device 20 to a drive device (not shown here in greater detail) and a paddle wheel 22 which is connected in a rotationally rigid manner to the shaft 21 and which has a plurality of paddle blades arranged concentrically to an axis of rotation 25 between an airfoil carrier 23 and a head plate 24 26 has.
  • the airfoils 26 have a height H which corresponds to the axial distance of the head plate 24 from the airfoil carrier 23 in the direction of the axis of rotation 25.
  • the airfoils 26, the airfoil carrier 23 and the head plate 24 each have, as in FIG Fig. 5 a laminate structure 27, 28, 29, which is formed from individual carbon fiber layer blanks 39, 41, 44 arranged one above the other.
  • Fig. 3 shows a molding tool 31, which in the formation of the laminate structures 27, 28, 29 and in particular in the formation of a in Fig. 5
  • Connection laminate structure 32 shown in connection areas 30 between the airfoil 26 and the airfoil carrier 23 and the head plate 24 is used.
  • the molding tool 31 has a number of molding blocks 34 corresponding to the number of airfoil spaces 33, which are arranged around a molding ring 35, a molding ring opening 36 on the underside of the molding ring 35 being closed with a molding disk 36.
  • the mold blocks 34 are in their Fig. 3 arrangement shown secured by a clamping ring 37 which abuts the outer circumference of the mold blocks 34 and presses the mold blocks 34 against the mold ring 35.
  • the mold blocks 34 are designed or arranged relative to one another in such a way that a positioning slot 38 is formed between two mold blocks 34 arranged next to one another, which specifies the alignment of the airfoils 26.
  • FIG. 5 show an enlarged partial view of a positioning slot 38 of the molding tool 31 during the manufacture of the impeller 22, the structure of the laminate structures 28, 29 of the airfoil carrier 23 and the head plate 24 and of the connecting laminate structure 32 is explained below.
  • Figure 4A shows how the laminate structure 27 of the airfoil 26, which is formed from a plurality of carbon fiber layer blanks 39 arranged one on top of the other, is arranged in the positioning slot 38 between two adjacent mold blocks 34 such that upper and lower blank ends 40 of the carbon fiber layer blanks 39 after insertion into the positioning slot 38 project beyond a contact surface 42 of the molding tool 31 formed by the top and the bottom of the mold blocks 34.
  • a first carbon fiber layer blank 44 of the head disc 24 is placed on the contact surface 42 such that the laminate structure 27 of the airfoil 26 is passed through a through opening 43 in the carbon fiber layer blank 44 of the head disc 24 and the upper blank end 40 is pivoted against the carbon fiber layer blank 44.
  • a first carbon fiber layer cut 41 of the airfoil carrier 23 is arranged on the opposite contact surface 42, with 4C to 4F only the processes on the upper contact surface 42 for forming the connection laminate structure 32 in the connection region 30 between the airfoil 26 and the head plate 24 are explained.
  • the formation of the connection area 30 between the The airfoil 26 and the airfoil carrier 23 on the lower contact surface 42 are made accordingly.
  • connection laminate structure 32 of the connection region 30 is thus formed together with the laminate structure 29 of the head plate 24.
  • carbon fiber layer blanks 46 designed as cover layers which, like the rest of the carbon fiber layer blanks 44 of the head plate 24 and the carbon fiber layer blanks 41 of the airfoil carrier 23, can be formed from fabric layers with a special fiber orientation, for example spiral fabric layers, if required.
  • Fig. 5 shows the molding tool 31 supplemented by an upper plate 47 and a lower plate 48 with the in FIG Figure 4F Connection region 30 shown, that between the laminate structure 27 of the airfoil 26 and the laminate structure 28 of the airfoil carrier 23 and between the laminate structure 27 of the airfoil 26 and the laminate structure 29 of the top plate 24 is formed, before the impregnation of the laminate structures 27, 28, 29, 32 with a phenolic resin and subsequent curing.
  • the paddle wheel 22 which is formed as a laminate structure in the molding tool, is pyrolyzed in a protective gas atmosphere. During this process, the impeller remains in the mold between the top plate 47 and the bottom plate 48.
  • the top plate 47 and the bottom plate 48 are removed and the paddle wheel 22 is removed from the molding tool 31. If necessary, a subsequent compression and heat treatment of the impeller 22 can then take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (7)

  1. Roue à pales (22) pour un dispositif de circulation pour la circulation d'une atmosphère ambiante, ladite roue à pales comprenant une pluralité des pales (26) qui s'étend vers un axe de rotation (25) de la roue à pales entre un porteur de pale (23) et un panneau supérieur (24) préférablement circulaire et définit la distance du panneau supérieur du porteur de pale vers l'axe de rotation par sa largeur de pales H, ledit porteur de pale, ledit panneau supérieur et lesdites pales comprenant une structure stratifiée (27, 28, 29), chacune ayant une pluralité des coupes de couche de fibre de carbone (39, 41, 44) disposées l'une sure l'autre, lesdites coupes de couche de fibre de carbone (39) de la structure stratifiée formant les pales comprenant une longueur de coupe qui est plus longue que la largeur des pales de telle manière que les coupes de couche de fibre de carbone (39) sont disposés entre deux coupes adjacentes de couche de fibre de carbone (41, 44) du porteur de pale et du panneau supérieur par un bout de coupe (40) supérieur et inférieur respectivement dans des zones de connexion (30) connectant les pales au porteur de pale et au panneau supérieur.
  2. Roue à pales selon la revendication 1,
    caractérisée en ce qu'
    une structure stratifiée de connexion (32) est formée dans les zones de connexion (30), les bouts de coupe (40) supérieurs et inférieur des coupes de couche de fibre de carbone (39) des pales (26) étant disposées alternativement avec les coupes de couche de fibre de carbone (41, 44) du porteur de pale (23) et du panneau supérieur (24) dans la structure stratifiée de connexion (32).
  3. Procédé pour la production d'une roue à pales (22) pour un dispositif de circulation pour la circulation d'une atmosphère ambiante, ladite roue à pales comprenant une pluralité des pales (26) qui s'étend vers un axe de rotation (25) de la roue à pales entre un porteur de pale (23) et un panneau supérieur (24) et définit la distance du panneau supérieur du porteur de pale vers l'axe de rotation par sa largeur H, une structure stratifiée (27, 28, 29) étant construite par une pluralité des coupes adjacentes de couche de fibre de carbone (39, 41, 44) pour la construction du porteur de pale, du panneau supérieur et des pales, et des bouts de coupe (40) supérieurs et inférieurs des coupes de couche de fibre de carbone (39) des pales étant pivotés contre une coupe de couche de fibre de carbone (41, 44) et étant pourvu d'une outre coupe de couche de fibre de carbone (41, 44) du porteur de pale et du panneau supérieur pour la formation des zones de connexion (30) entre la structure stratifiée (27) des pales et les structures stratifiées (28, 29) du porteur de pale et du panneau supérieur après les bouts supérieurs et inférieur sont insérés au travers des ouvertures de traversée (43) formées dans les coupes de couche de fibre de carbone (41, 44) du porteur de pale et du panneau supérieur.
  4. Procédé selon la revendication 3,
    caractérisé en ce qu'
    une structure stratifiée de connexion (32) ayant des coupes de couche de fibre de carbone (41) alternatives du porteur de pale (23) et du panneau supérieur sont formées dans les zones de connexion (30) en utilisant des bouts de coupe (40) des coupes de couche de fibre de carbone (39) des pales (26).
  5. Procédé selon la revendication 3 ou 4,
    caractérisé en ce que
    les bouts de coupe (40) des coupes de couche de fibre de carbone (39) des pales (26) sont fixé au moins temporellement sur les coupes de couche de fibre de carbone (41, 44) du porteur de pale (23) et du panneau supérieur (24) pendant la construction de la structure stratifiées (28, 29) du porteur de pale (23) et du panneau supérieur (24).
  6. Procédé selon l'une quelconque des revendications 3 à 5,
    caractérisé en ce que
    tous les bouts de coupe (40) des coupes de couche de fibre de carbone (39) formant les pales (26) sont guidés au travers des ouvertures de traversée (43) des coupes de couche de fibre de carbone (41, 44) du porteur de pale (23) et du panneau supérieur (24) et en ce que les bouts de coupe (40) sont chacun pivotés contre une coupe de couche de fibre de carbone (41, 44) du porteur de pale et du panneau supérieur (24) subséquemment à la formation de la structure stratifiée de connexion (32).
  7. Procédé selon l'une quelconque des revendications 3 à 6,
    caractérisé en ce que
    pour la disposition relative définie des pales (26) par rapport au porteur de pale (23) et au panneau supérieur (24), les coupes de couche de fibre de carbone (39) des pales qui sont assemblé pour former la structure stratifiée (27) sont disposées dans les fentes de positionnement (38) d'un outil de moulage (31), qui forme un anneau de moulage, de telle manière que les bouts de coupe (40) supérieurs et inférieures saillissent sur une surface d'appui (42) formée par un côté supérieur et un côté inférieur de l'outil de moulage, et en ce que les coupes de couche de fibre de carbone (41, 44) du porteur de pale (23) et du panneau supérieur (24) sont empilées sur la surface d'appui au porteur de pale (23) et au panneau supérieur (24) en formant la structure stratifiée de connexion (32) des zones de connexion (30).
EP16172709.4A 2015-06-15 2016-06-02 Roue a palettes et procede de fabrication d'une roue a palettes Active EP3106674B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015210959.3A DE102015210959A1 (de) 2015-06-15 2015-06-15 Schaufelrad und Verfahren zur Herstellung eines Schaufelrades

Publications (2)

Publication Number Publication Date
EP3106674A1 EP3106674A1 (fr) 2016-12-21
EP3106674B1 true EP3106674B1 (fr) 2020-01-29

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ID=56119323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16172709.4A Active EP3106674B1 (fr) 2015-06-15 2016-06-02 Roue a palettes et procede de fabrication d'une roue a palettes

Country Status (2)

Country Link
EP (1) EP3106674B1 (fr)
DE (1) DE102015210959A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708825C2 (de) * 1997-03-05 2001-11-15 Deutsch Zentr Luft & Raumfahrt Vorrichtung zum Fördern eines Mediums
DE10104170A1 (de) * 2001-01-30 2002-08-01 Abb Research Ltd Lüfterrad und Verfahren zu dessen Herstellung
DE102006040800B4 (de) * 2006-08-31 2013-07-11 Kunststoffverarbeitung Sube Verfahren zum Verbinden einer Grundplatte mit einem Stegteil sowie Verbindung einer Grundplatte mit einem Stegteil
FI20105048A (fi) * 2010-01-21 2011-07-22 Runtech Systems Oy Menetelmä radiaalikompressorin juoksupyörän valmistamiseksi
GB2484350B (en) * 2010-10-08 2013-06-05 Gkn Aerospace Services Ltd Advanced fibre placement lay-up
FR2968364B1 (fr) * 2010-12-01 2012-12-28 Snecma Element de soufflante de turboreacteur a double flux
DE102012214405B4 (de) 2012-08-13 2014-05-28 Schunk Kohlenstofftechnik Gmbh Umwälzvorrichtung zum Umwälzen einer umgebenden Atmosphäre sowie Verfahren zur Herstellung einer derartigen Umwälzvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102015210959A1 (de) 2016-12-15
EP3106674A1 (fr) 2016-12-21

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